Assess on Fresh Forage Yield and Nutritive Value of Rhizomatous Medicago sativa L.cv.Qingshui
Four alfalfa materials with three root types (rhizomatous Medicago sativa L. cv. Qingshui, creeping rooted native M. falcata, creeping rooted M. varia Martin, cv. Gannong No. 2 and taproot M. sativa L. cv. Longdong) were used to study fresh forage yield and nutritive value in semi-humid regions of Tianshui, semi-arid regions of Lanzhou and arid regions of Wuwei, which provides a scientific basis for its extensive application to production. The results showed that rhizomatous alfalfa had the highest crude pro-tein content, 20. 36% , the lowest crude fiber content, 39. 47% , low grass yield, 4. 05 kg·m-2, relatively low plant height, abundant leaf weight and high leaf-stem ratio, which was good in cultivating alfalfa of high quality. Experiments showed that different ecozones had obvious effects on yield and nutrient values of alfalfa. Plant' height, leaf-stem ratio and forage yield of four alfalfa materials were the highest in Tian-shui region, then Lanzhou region, it was the lowest in Wuwei region. Different years had effects on nutri-ents composition of alfalfa in the same ecozone,the CP, EE and NFE contents of the 1st cut grass of four alfalfa materials in the 1st year were higher than the 1st cut grass in the 2nd year in Lanzhou and Wuwei region in addition to NFE contents in Tianshui region. But the CF, CASH, Ca and P contents of 1st cut grass in the 2nd year were higher than the 1st cut grass in the 1st year.
Rhizomatous alfalfaRoot typeEcozoneNutritive value
NETL
NSTL
万方数据
维普
